Construction generated soil management system

Abstract

To effectively utilize construction generated soils in the whole of a plurality of sites by selecting an acceptance site suitable for a soil property with respect to construction generated soils at a construction site.SOLUTION: A construction generated soil management system according to the present invention manages construction generated soils generated at a construction site and includes a storage device and a control device. The storage device stores therein a determination policy which defines generation site information where construction generated soils are generated, acceptance site information where the construction generated soils are to be accepted, and a priority order relating to distribution of the construction generated soils and defines the priority order based on at least soil property classification. The control device comprises a processing method determination unit which acquires the generation site information and the acceptance site information and determines a method of distributing the construction generation soils to a plurality of construction generated soil acceptance destinations in accordance with the determination policy.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a management system for construction generated soil, which is involved in the trading market business, construction planning, and management of construction generated soil and improved soil generated at construction sites. [Background technology]

[0002] In road construction and other construction projects, large amounts of construction surplus soil are generated during the construction process. It is desirable to reuse the generated construction surplus soil in order to make effective use of resources. Methods for reusing the soil include having it accepted by other construction sites, temporarily storing it in a storage facility called a stockyard, or transporting it to a soil improvement plant to improve the properties of the construction surplus soil.

[0003] Regarding the reuse of construction waste soil, Patent Document 1 describes an invention related to a system that matches information on construction waste soil with user requirements, with the aim of eliminating waste and improving the efficiency of soil distribution. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-021130 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the system described in Patent Document 1 is an invention aimed at matching construction generated soil from one generation site with the next construction site, and does not take into account the utilization status of the construction generated soil at the generation site or the soil improvement plant and stockyard. As a result, there are limits to the utilization of construction generated soil. Specifically, there will be imbalances in the stock status of construction generated soil and improved soil at soil improvement plants and stockyards, which will increase transportation costs and may result in not all construction generated soil being utilized effectively.

[0006] More specifically, the disposal destination of the construction waste soil varies depending on its properties. If there is no space available at the nearby plant / stockyard when the soil is removed, it will have to be disposed of in a landfill or transported far away, which will increase transportation costs and GHG (Green House Gas) emissions.

[0007] In addition, the application of construction waste soil varies depending on its quality. If the soil characteristics of a nearby plant / stockyard do not match the soil when it is used, it will need to be disposed of in a landfill or procured from a distant location, which will increase transportation costs and GHG emissions.

[0008] In other words, future demand for construction generated soil is often uncertain, and the amount of construction generated soil accepted during the period in which it is stored as inventory may decrease, worsening the economic viability of the plant / stockyard, increasing the risk of improper disposal, or even if construction generated soil is needed, it may not be usable because the soil quality is not suitable.

[0009] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a management system for construction generated soil that can select a receiving site with suitable soil quality for construction generated soil at a construction site and make effective use of the construction generated soil across multiple sites. [Means for solving the problem]

[0010] In order to solve the above problems, the construction generated soil management system of the present invention is a construction generated soil management system that manages construction generated soil at construction sites, and has a memory device and a control device, the memory device stores information about the generation site where the construction generated soil is generated, information about the receiving site where the construction generated soil is received, and a decision policy that specifies the priority for distributing the construction generated soil, the decision policy specifying the priority based on at least soil quality class, and the control device has a processing method determination unit that acquires the generation site information and the receiving site information and determines the method for distributing the construction generated soil to multiple construction generated soil recipients in accordance with the decision policy. [Effects of the Invention]

[0011] According to the present invention, it is possible to select a receiving site with suitable soil quality for construction generated soil from a construction site, and to effectively utilize the construction generated soil across multiple sites. When future receiving sites utilize construction generated soil, they can purchase it from a nearby soil improvement plant or stockyard, thereby reducing transportation costs and GHG emissions in total. Further features related to the present invention will become apparent from the description of the present specification and the accompanying drawings. Furthermore, problems, configurations, and effects other than those described above will become apparent from the following description of the embodiments. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is an overall schematic diagram including the range in which a construction generated soil management system according to an embodiment of the present invention is applied. [Figure 2] 1 is a functional block diagram showing the configuration of a construction generated soil management system according to an embodiment of the present invention. [Figure 3] 10 is a flowchart showing a process for determining a method for disposing of construction generated soil executed by the construction generated soil management system. [Figure 4] 10 is a flowchart showing the inter-construction use process executed by the construction generated soil management system. [Figure 5] 10 is a flowchart showing the designated disposal process executed by the construction generated soil management system. [Figure 6] FIG. 10 is a diagram for explaining direct construction use processing. [Figure 7] FIG. 10 is a diagram for explaining inter-construction use processing via a stockyard. [Figure 8] FIG. 10 is a diagram for explaining inter-construction use processing via a stockyard. [Figure 9] FIG. 10 is a diagram for explaining inter-construction utilization processing via a soil improvement plant. [Figure 10] FIG. 10 is a diagram for explaining inter-construction utilization processing via a soil improvement plant. [Figure 11] FIG. 10 is a diagram for explaining designated disposal processing at a soil improvement plant. [Figure 12]FIG. 10 is a diagram for explaining designated disposal processing at a soil improvement plant. [Figure 13] FIG. 10 is a diagram for explaining designated disposal processing in a stockyard. [Figure 14] FIG. 10 is a diagram for explaining designated disposal processing in a stockyard. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, an embodiment of the present invention will be described with reference to the drawings etc. Figure 1 is an overall schematic diagram including the scope of application of a construction generated soil management system according to one embodiment of the present invention. The construction generated soil management system 100 is also connected to terminals 300 placed in each soil improvement plant / stockyard 200 via a network such as the Internet. Managers and users may operate the terminals by placing them in the same location as the construction generated soil management system, or may operate them remotely. Construction generated soil generated at a construction site 400 is brought to the plant / stockyard 200, and construction generated soil stored in the plant / stockyard 200 is brought to the construction site 400 for use.

[0014] FIG. 2 is a functional block diagram showing the functions of a construction generated soil management system 100 according to one embodiment of the present invention. The construction generated soil management system 100 comprises a storage device 10, a control device 20, and a communication interface 30. The storage device 10 is configured, for example, by a ROM (Read Only Member). The control device 20 is configured, for example, by a CPU (Central Processing Unit). The storage device 10 stores a decision policy 11, generation site information 12, receiving site information 13, and stockyard / soil improvement plant information 14 as information. The control device 20 comprises, as its functional units, a treatment method determination unit 21, an inter-construction utilization processing unit 22, a designated disposal processing unit 23, a soil volume determination unit 24, a soil compatibility determination unit 25, and a distance cost calculation unit 26.

[0015] The decision policy 11 defines a decision policy for determining matching between construction generated soil and receiving sites. It is possible to program the decision policy so that it can be changed according to the situation, in addition to a predetermined decision policy. While details will be described later in the explanation of each embodiment, it is preferable that the decision policy 11 at least defines a priority based on soil quality grade. The soil quality grade indicates the level of quality of the construction generated soil, and different soil quality grades can be used depending on the purpose and construction content, such as backfilling, land development, and road embankment. The generation site information 12 includes information on the construction site where construction generated soil is generated, such as the type of construction, generated soil type (soil quality grade), generated soil volume, construction period, and construction location. The receiving site information 13 includes information on the construction site that will receive the generated construction generated soil, such as the acceptable soil type, acceptable soil volume, construction period, and construction location. The stockyard / soil improvement plant information 14 includes information on the acceptable soil type (soil quality grade), acceptable soil volume, and location of the stockyard / soil improvement plant.

[0016] The functional units of the control device 20 are described below. The disposal method determination unit 21 determines how construction generated soil should be disposed of when it is generated at a construction site. The inter-construction utilization processing unit 22 executes processes such as determining the allocation of construction generated soil according to the decision policy 11 when inter-construction utilization processing is to be executed. The designated disposal processing unit 23 determines the type of designated disposal for each soil type when designated disposal processing is to be executed. The soil volume determination unit 24 determines the volume of soil generated at the construction generated soil generation site, the volume of soil to be received at the receiving site, and the volume of soil that can be received / stored at the stockyard / soil improvement plant. The soil quality compatibility determination unit 25 determines the degree of compatibility of soil quality between the construction generated soil generation site and the receiving site. The distance cost calculation unit 26 calculates the total transportation distance, GHG (Green House Gas) amount, transportation cost, and overall cost value including these, based on the location coordinates of the soil generation site and the receiving site. This is because the GHG amount and fuel cost of the dump truck change depending on the weight of the load (soil volume).

[0017] The communication interface 30 is a device capable of wireless communication with the outside, and is connected to a terminal 300 placed in each soil improvement plant / stockyard 200 to send and receive data.

[0018] To summarize the construction generated soil management system 100 of this embodiment, the construction generated soil management system 100 is a management system 100 for managing construction generated soil at construction sites, and has a memory device 10 and a control device 20, the memory device 10 stores information about the generation site where the construction generated soil is generated, information about the receiving site where the construction generated soil is received, and a decision policy 11 that specifies the priority for distributing the construction generated soil, the decision policy 11 specifying the priority based on at least soil quality class, and the control device 20 has a processing method determination unit 21 that acquires information about the generation site and information about the receiving site, and determines the method for distributing the construction generated soil to multiple construction generated soil recipients in accordance with the decision policy 11.

[0019] Next, a description will be given of the processing executed by the construction generated soil management system 100 according to this embodiment. Fig. 3 is a flowchart showing the processing executed by the processing method determination unit 21 of the construction generated soil management system 100 first.

[0020] First, in step S1011, the disposal method determination unit 21 checks whether there is a construction site where construction generated soil has been generated, by referring to the generation site information 12 in the storage device 10. Next, in step S1012, the disposal method determination unit 21 checks whether there is a next construction site that can receive the generated construction generated soil, by referring to the receiving site information 13 in the storage device 10. Specifically, it determines whether there is a construction site where construction is being carried out during the construction period at the generation site.

[0021] If both steps S1011 and S1012 are Yes, in step S1013 the inter-construction use processing unit 22 carries out inter-construction use processing. Details of the inter-construction use processing will be described later using Figures 4 and 6-10. After the inter-construction use processing is completed, in S1014 the generation site information 12 is referenced again to check whether there are any more construction generated soil sites. If the result in step S1014 is Yes, this means that there is still construction generated soil that has not been processed, so in step S1015 the designated disposal processing unit 23 carries out designated disposal processing to a stockyard / soil improvement plant. The designated disposal processing to a stockyard / soil improvement plant will be described later using Figures 5 and 11-14.

[0022] As described above, the disposal method determination unit 21 selects between inter-construction use disposal or designated disposal to a stockyard / soil improvement plant as the method of allocating construction generated soil depending on the conditions of the site where the construction generated soil is generated and the site where it is to be received.

[0023] Next, the processing executed by the construction use processing unit 22 will be described with reference to FIG. Example 1: Direct use during construction First, in step S1031, the inter-construction use processing unit 22 determines whether direct inter-construction use is possible. Specifically, for example, by referring to the receiving site information 13 and the generation site information 12, direct inter-construction use is possible when the period when construction generated soil is received at the receiving site and the period when construction generated soil is generated at the generation site overlap, and when the amount of construction generated soil at the generation site is greater than the soil quality required by the receiving site.

[0024] If direct inter-construction use is possible (Yes in step S1031), in step S1032, the combination of inter-construction use is determined in accordance with decision policy 11. A specific example is shown in Figure 6. Figure 6(a) shows part of the information accumulated in the generation site information 12, and Figure 6(b) shows part of the information accumulated in the acceptance site information 13. For example, decision policy 11 may be as follows. Note that decision policies with smaller numbers are applied preferentially. Decision policy 1 is determined by the soil volume determination unit 24, and decision policy 2 is determined by the soil compatibility determination unit 25. 1. Select the combination that allows the most soil volume 2. Select a combination with high soil compatibility (highest compatibility when the source and destination soils are the same).

[0025] 1) From Figure 6, at the occurrence site A, the soil quality grade is Class 1 and the amount of Class 1 generated soil is 350 m 3 At the site D, 400m of excavated soil with a soil quality grade of Class 2 was found. 3 In addition, the receiving site F has 400m of second-class excavated soil. 3 The matching candidates for receiving site F are the first-class generated soil from generation site A and the second-class generated soil from generation site D. On the other hand, receiving site G requires 400m of first-class generated soil. 3 Since only Type 1 generated soil can be accepted, Type 1 generated soil from generation site A is the candidate. The construction periods of generation sites A and D and receiving sites F and G overlap.

[0026] 2) Receiving site F can accept construction generated soil from either generation site A or D, but according to decision policy 2, it selects the second type of generated soil from generation site D, which is of the same class as the required soil quality to be accepted, and the first type of generated soil from generation site A is used at receiving site G. After matching is established, Figures 6(a) and (b) are updated. For example, all of the construction generated soil displayed in Figure 6(a) has been matched to the receiving site, and is therefore deleted from generation site information 12. Also, in the case of Figure 6(b), receiving site F can accept the desired 400m 3The construction generated soil is matched and deleted from the receiving site information. On the other hand, receiving site G is 400m 3 350m for the request 3 Since construction generated soil was allocated, it was not deleted from the receiving site information 13, and the received soil volume item was 50m 3 The occurrence site information 12 and the receiving site information 13 are updated in the same manner in the following examples.

[0027] In the above example 1, if construction work is being carried out at the same time as the construction site where the construction soil was generated, and if there is a receiving site that can accept the soil quality grade of the construction soil, the processing method determination unit 21 selects direct inter-construction processing, in which the construction soil is transported directly to the receiving site. This direct inter-construction use, if certain matching conditions are met between the generation site and the receiving site, makes it possible to immediately and effectively utilize the construction soil generated at the generation site, eliminating the need to dispose of the construction soil by landfill and also reducing the storage costs of the construction soil.

[0028] Example 2: Use during construction via a stockyard Returning to the flowchart of Figure 4, after the processing of step S1032 is completed, or if step S1031 is No, the process proceeds to step S1033. In step S1033, the inter-construction use processing unit 22 determines whether inter-construction use via a stockyard is possible. Specifically, for example, by referring to the receiving site information 13 and the generation site information 12, if the receiving and generation times are different but construction generated soil of a quality equal to or higher than that required by the receiving site is generated at the generation site, inter-construction use via a stockyard is possible.

[0029] If the processing method determination unit 21 determines in step S1034 that inter-construction use via a stockyard is possible, the inter-construction use combination is determined according to the decision policy 11. A specific example will be explained using Figures 7 and 8. Figure 7(a) shows part of the information stored in the generation site information 12, and Figure 7(b) shows part of the information stored in the receiving site information 13. In this case, Figures 7(a) and 7(b) show the distance to each stockyard, but this is calculated, for example, from address information. Figures 7(c) and 7(d) show part of the information stored in the stockyard / soil improvement plant information 14, with Figure 7(c) showing information before the construction soil is received and Figure 7(d) showing information after the construction soil is received. Figure 8 shows an example of the locational relationship between the generation site, receiving site, and stockyard. In this case, for example, the decision policy 11 is as follows: Decision policy 1 is determined by the soil volume determination unit 24, decision policy 2 is determined by the soil compatibility determination unit 25, and decision policy 3 is determined by the distance cost calculation unit 26. As in this example, it is preferable that decision policy 11 specifies priorities based on the soil volume to be used and on costs in addition to criteria related to soil quality class. 1. Select the combination that allows the most soil volume 2. Select a combination with high soil compatibility (highest compatibility when the source and destination soils are the same). 3. Low total distance cost (distance between the production site, stockyard, and receiving site)

[0030] 1) Referring to Figure 7(b), at the receiving site E, 1200 m of Type 3 generated soil was used. 3 First, a combination that allows as much soil volume as possible to be used is selected according to decision policy 1. Here, 500m of Type 3 generated soil is stored in stockyard a near receiving site E. 3 I'll make use of it, but it's still 700m 3 There is a shortage. 2) In accordance with Decision Policy 2, 600m of Type 3 generated soil from Generation Site D, where the same type of construction generated soil as the Type 3 generated soil required at Receiving Site E, is generated. 3In order to use this, it is temporarily stored in stockyard a near receiving site E. This leaves 100m 3 There will be a shortage. 3) Because there is no more Type 3 generated soil at the generation site or stockyard, Type 2 generated soil, whose soil quality grade is Type 2, will be utilized. However, there is no stock in Stockyard A. 4) The sites A and C where the second-class generated soil is generated are candidates for inter-construction use. According to decision policy 3, the distance cost is low (the distance from stockyard A is close), so the second-class generated soil is 100 m from the site A. 3 The construction soil stored in stockyard A will be temporarily stored in stockyard A. After that, when construction begins at the receiving site, the construction soil stored in stockyard A will be brought in.

[0031] In the above example 2, the processing method determination unit 21 starts receiving site work after the completion of on-site work at the construction site where the construction soil was generated, and if there is a receiving site that can accept the soil quality class of the construction soil, selects inter-construction processing via a stockyard, in which the construction soil is stored in a stockyard and transported to the receiving site after the start of on-site work. According to this inter-construction use via a stockyard, even if the construction period at the receiving site does not overlap with the construction period at the generation site, it is possible to reliably make effective use of the generated construction soil by temporarily storing it in a stockyard.

[0032] Example 3: Use during construction via a soil improvement plant Return to the flowchart of FIG. 4. After the processing of step S1034 is completed, or if step S1033 is No, the process proceeds to step S1035. In step S1035, the inter-construction utilization processing unit 22 determines whether inter-construction treatment via a soil improvement plant is possible. Generally, soil quality grades decrease in the order of Type 1 to Type 4 generated soil and mud. A soil improvement plant is a facility that improves construction generated soil and improves its soil quality grade. Here, the soil improvement plant will be described as improving the soil grade by one grade. Type 2 generated soil is improved to Type 1 improved soil, Type 3 generated soil is improved to Type 2 improved soil, Type 4 generated soil is improved to Type 3 improved soil, and mud is improved to Type 4 improved soil.

[0033] In step S1035, it is determined whether inter-construction use via a soil improvement plant is possible. For example, by referring to the receiving site information 13 and the generating site information 12, if the receiving and generating times are different, and the generated soil is not of a quality higher than that required by the receiving site, but can be used if the soil is improved, inter-construction use via a soil improvement plant is possible.

[0034] In step S1036, if inter-construction use via a soil improvement plant is possible, the combination of inter-construction use is determined according to decision policy 11. Specific examples are shown in Figures 9 and 10. Figure 9(a) shows part of the information accumulated in the generation site information 12, Figure 9(b) shows part of the information accumulated in the receiving site information 13, and Figure 9(c) shows part of the information accumulated in the stockyard / soil improvement plant information 14. Just like in stockyards, soil improvement plants also store improved soil, but the method of distribution of stored construction generated soil is the same as inter-construction use via stockyards, so it is omitted here. Figure 10 shows the relative locations of the generation site, receiving site, and soil improvement plant. In this example, decision policy 11 is as follows. The respective decision-makers are the same as in Example 2 above. 1. Select the combination that allows the most soil volume 2. Select a combination with high soil compatibility (the highest compatibility is achieved when the minimum acceptable soil quality at the source and destination sites, and the source site and stockyard or soil improvement plant, are the same). 3. Low total distance cost (distance from generation site to soil improvement plant to receiving site)

[0035] 1) Receiving sites E and F require Type 1 excavated soil, which has a soil quality grade of Type 1, but no Type 1 excavated soil is being generated at any of the generation sites. 2) However, at the generation sites A and B, there is generated Class 2 generated soil, which has a soil quality grade of Class 2, and this will be improved and utilized. 3) According to decision policy 2, plant d is excluded because its soil suitability is lower than plants b and c (its minimum acceptable soil quality is mud, which is lower than plants b and c). However, plant d can improve even poor muddy soil, so it will be left open in case muddy soil occurs in the future. 4) According to decision policy 3, the combination with the lowest total distance cost for transporting construction generated soil is selected. In this example, plant b is the first choice for receiving construction generated soil at generation site B, so plant c is the first choice for receiving construction generated soil at generation site A. The improved construction generated soil is then stored at the plant and brought in when construction begins at the receiving site.

[0036] In the above example 3, the processing method determination unit 21 starts receiving site work after the completion of on-site work at the construction site where the construction soil was generated, and if there is a receiving site that can accept the construction soil with an improved soil quality, selects inter-construction processing via a soil improvement plant, in which the construction soil is transported to a soil improvement plant to be improved, and then transported to the receiving site after the start of receiving site work. This inter-construction use via a soil improvement plant makes it possible to effectively utilize the construction soil generated at the generation site, even if the construction periods of the receiving site and the generation site do not overlap and the generation site does not produce construction soil of the grade required by the receiving site.

[0037] The inter-construction use processing in step S1013 of Figure 3 has been described above using Figure 4. Returning to the flowchart of Figure 3, after the inter-construction use processing in step S1013 is completed, the process proceeds to step S1014. In step S1014, the disposal method determination unit 21 refers to the updated generation site information 12 and determines whether there are any generation sites with untreated construction generated soil. If all construction generated soil has been processed and there are no generation sites, the process ends, but if there are generation sites with untreated construction generated soil, the process proceeds to step S1015. In step S1015, designated disposal processing to a stockyard or soil improvement plant is carried out.

[0038] Using Figure 5, we will explain the flowchart of the processing executed by the designated disposal processing unit 23. Here, designated disposal processing is processing to send construction generated soil that currently has no receiving site to a stockyard or soil improvement plant in preparation for an opportunity to utilize it. Therefore, for example, it is preferable to make the stock amount in each stockyard and soil improvement plant uniform, and this may be adjusted according to regional characteristics. Also, soil quality generally decreases in grade from Type 1 to Type 4 generated soil and mud. In this example, for example, the decision policy 11 is as follows. The decision policy 11 in this example is determined by the soil quality compatibility determination unit 25. 1. Priority is given to disposal sites that meet the highest soil quality standards for construction waste soil (highest compatibility is achieved when the minimum acceptable soil quality between the source and receiving site, and between the source site and stockyard or soil improvement plant, is the same). 2. Prioritize disposal sites with the smallest stock of each soil type (to equalize the stock in each yard) 3. Prioritize disposal sites with a limited number of acceptable soil types

[0039] In addition to the above, distance costs, transaction prices, etc. may also be included. Also, Figure 5 shows an example in which construction generated soil with a high soil quality grade is allocated first, since there are many receiving sites and receiving stockyards for construction generated soil with a low soil quality grade.

[0040] Example 4: Designated disposal treatment at a soil improvement plant The designated disposal processing unit 23 first determines the disposal destination for the mud in step S1051. Next, the process proceeds to step S1052, where the disposal destination for the fourth-class generated soil is determined. Here, since it is desirable to improve and reuse the mud and fourth-class generated soil, the designated disposal is carried out at a soil improvement plant.

[0041] The designated disposal process for mud and Class 4 generated soil will be explained using Figures 11 and 12. Figure 11(a) shows part of the information stored in the generation site information 12, and Figures 11(b) to (d) show part of the information stored in the stockyard and soil improvement plant information 14. Figure 12 also shows the positional relationship between the generation site and the plant in this example. 1) In this example, 1000m of mud is deposited at the source site B. 3 At the site C, 500m of mud was 3 is occurring. 2) According to decision policy 1, plants b and c that can accept the mud are the candidate receiving sites. 3) According to decision policy 2, plants with less stock of improved muddy soil, type 4 generated soil, are given priority. In this example, plants b and c have less stock of type 4 generated soil, so 1000 m of mud from generation site B is given priority. 3 was transported to plant B, and 500m of mud from the source site C was 3 is transported to plant c. Step S1051 is completed by the above processing, and the process proceeds to step S1052.

[0042] In step S1052, the designated disposal of the fourth-class excavated soil, which has a soil quality class of fourth class, is carried out. 4) At the site A, 300m of Type 4 excavated soil was 3 At the site D, 800m of Type 4 excavated soil was 3 is occurring. 5) According to decision policy 1, plants b, c, and d are candidates that can accept the fourth-class generated soil, but plant c has only 100m 3 Therefore, it is excluded from the candidates. 6) According to decision policy 2, the plant with the least amount of stock of Type 3 generated soil, which is made by improving Type 4 generated soil, is given priority. In this example, in order to make the stock of Type 3 generated soil at each plant approximately the same, 500m of Type 4 generated soil at generation site A is used. 3 was transported to Plant D, and 300m of Type 4 excavated soil was 3 is transported to plant b. After transportation, the generation site information 12 and the stockyard / soil improvement plant information 14 are updated, and step S1052 is completed.

[0043] Example 5: Designated disposal in a stockyard After step S1052 is completed, the process proceeds to step S1053. Here, because type 2 and 3 generated soil can be used as is without soil improvement, and type 1 generated soil can be used as is without soil improvement, an example is shown in which the generated soil is disposed of in a designated stockyard rather than in a soil improvement plant. However, type 2 and 3 generated soil may also be treated as higher-level improved soil in a soil improvement plant.

[0044] The designated disposal process for Type 3 excavated soil will be explained using Figures 13 and 14. Figure 13(a) shows part of the information stored in the generation site information 12, and Figures 13(b) and (c) show part of the information stored in the stockyard and soil improvement plant information 14. Figure 14 also shows the positional relationship between the generation site and the stockyard in this example. 1) In this example, the third-class excavated soil at the site A is 1,500 m 3 At the site C, 800m of Type 3 excavated soil was 3 is occurring. 2) According to decision policy 1, stockyards b, c, and d that can accept Type 3 generated soil are candidates for acceptance. 3) In accordance with Decision Policy 2, 1,500 m of Type 3 excavated soil from the site A was 3 was transported to stockyard C, and 800m of Type 3 excavated soil from the source site C was 3 is transported to plant d. After transportation, the generation site information 12 and stockyard / soil improvement plant information 14 are updated, and step S1053 is terminated.

[0045] After step S1053 is completed, the process moves to step S1054, where the designated disposal of the second type of generated soil is carried out in the same manner as in step S1053. Thereafter, the process moves to step S1055, where the designated disposal of the first type of generated soil is carried out.

[0046] In Examples 4 and 5 described above, the disposal method determination unit 21 selects designated disposal processing in which construction generated soil is transported to a stockyard or soil improvement plant when there is no receiving site that can accept the construction generated soil. Through designated disposal processing, construction generated soil that is not planned for utilization is also stored in a soil improvement plant or stockyard in preparation for future use, with the amount stored at each storage facility being equal. Therefore, it becomes possible to effectively utilize construction generated soil that would have been landfilled in the past. In other words, only construction generated soil that remains after the designated disposal processing in Figures 3 and 5 is finally disposed of (transported to a landfill). This assumes a situation where the stockyard does not have enough capacity to accept the construction generated soil.

[0047] In addition to the decision policy explained above, it is also possible to adopt a decision policy that prioritizes higher-grade construction generated soil at the receiving site, or a decision policy that selects construction generated soil so that the purchase cost is low, etc. Also, for example, in selecting designated disposal destinations for various types of generated soil in S1052 to S1054 of Fig. 5, there may be a situation where some construction generated soil is sent to a plant and some construction generated soil is sent to a stockyard.

[0048] According to the embodiment of the present invention described above, the following advantageous effects are achieved. (1) The construction generated soil management system of the present invention is a construction generated soil management system for managing construction generated soil at a construction site, and has a memory device and a control device. The memory device stores information about the generation site where the construction generated soil is generated, information about the receiving site where the construction generated soil is received, and a decision policy that specifies the priority for distributing the construction generated soil, the decision policy specifying the priority based on at least the soil quality grade. The control device has a processing method determination unit that acquires the generation site information and the receiving site information and determines the method for distributing the construction generated soil to multiple construction generated soil receiving sites in accordance with the decision policy.

[0049] By adopting the above configuration, it becomes possible to select a receiving site with suitable soil quality and effectively utilize construction waste soil across multiple sites.

[0050] (2) The disposal method determination unit selects the method of distributing construction generated soil between construction projects or designated disposal in a stockyard or soil improvement plant. This makes it possible to select an appropriate distribution method based on the type of construction, implementation time, required soil quality, etc.

[0051] (3) If the receiving site work overlaps with the construction site where the construction soil was generated, and there is a receiving site that can accept the soil quality grade of the construction soil, the processing method determination unit selects direct inter-construction processing, in which the construction soil is directly transported to the receiving site. This makes it possible to immediately and effectively utilize the construction soil generated at the site where it was generated, eliminating the need to dispose of it in a landfill, and also reducing the storage costs of the construction soil.

[0052] (4) The processing method determination unit starts receiving site work after the completion of on-site work at the construction site where the construction soil was generated, and if there is a receiving site that can accept the soil quality grade of the construction soil, selects inter-construction processing via stockyard, in which the construction soil is stored in the stockyard and transported to the receiving site after the start of on-site work at the construction site where the construction soil was generated.By temporarily storing the construction soil in the stockyard, it is possible to ensure effective use of the generated construction soil even if the construction period at the receiving site does not overlap with the construction period at the generation site.

[0053] (5) The processing method determination unit starts receiving site work after the completion of on-site work at the construction site where the construction soil was generated, and if there is a receiving site that can accept the construction soil with an improved soil quality, selects inter-construction processing via a soil improvement plant, in which the construction soil is transported to a soil improvement plant to improve its quality, and then transported to the receiving site after the start of on-site work at the construction site where the construction soil was generated. This makes it possible to effectively utilize the construction soil generated at the generation site, even if the construction periods at the receiving site and the generation site do not overlap and the generation site does not generate construction soil of the quality required by the receiving site.

[0054] (6) When there is no site that can accept construction waste soil, the disposal method determination unit selects the designated disposal method of transporting the construction waste soil to a stockyard or the soil improvement plant. This makes it possible to effectively utilize construction waste soil that would have been landfilled in the past.

[0055] (7) The decision policy further defines priorities based on the amount of soil to be used and on costs. By adopting a decision policy defined from multiple perspectives, it becomes possible to allocate construction generated soil appropriately according to the requirements of the site.

[0056] The present invention is not limited to the above-described embodiments, and various modifications are possible. For example, the above-described embodiments have been described in detail to clearly explain the present invention, and the present invention is not necessarily limited to embodiments including all of the described configurations. Furthermore, it is possible to replace part of the configuration of one embodiment with the configuration of another embodiment. It is also possible to add the configuration of another embodiment to the configuration of one embodiment. It is also possible to delete part of the configuration of each embodiment, or to add or replace other configurations. [Explanation of symbols]

[0057] 10 storage device, 11 decision policy, 20 control device, 21 treatment method determination unit, 100 construction generated soil management system

Claims

1. A construction soil management system for managing construction soil generated at a construction site, a storage device and a control device; The storage device stores information on the site where the construction generated soil is generated, information on the site where the construction generated soil is received, and a decision policy that specifies the priority order for the distribution of the construction generated soil, the decision policy specifying the priority order based on at least soil quality class; The control device includes a processing method determination unit that acquires the generation site information and the receiving site information, and determines a method of allocating the construction generated soil to a plurality of construction generated soil receiving destinations in accordance with the determination policy. A construction soil management system characterized by:

2. The construction generated soil management system according to claim 1, The processing method determination unit selects, as the method of allocating the construction generated soil, processing for use between construction works or designated disposal processing to a stockyard or a soil improvement plant. A construction soil management system characterized by:

3. The construction generated soil management system according to claim 2, The processing method determination unit selects direct inter-construction processing in which the construction generated soil is directly transported to the receiving site when receiving site work is being carried out during a period overlapping with the construction site where the construction generated soil was generated, and when there is a receiving site that can accept the soil quality grade of the construction generated soil. A construction soil management system characterized by:

4. The construction generated soil management system according to claim 2, The processing method determination unit starts on-site receiving work after the completion of on-site generation work at the construction site where the construction soil was generated, and if there is a receiving site that can accept the soil quality class of the construction soil, selects inter-construction processing via stockyard, in which the construction soil is stored in the stockyard and the construction soil is transported to the receiving site after the on-site receiving work begins. A construction soil management system characterized by:

5. The construction generated soil management system according to claim 2, The processing method determination unit starts on-site receiving work after the completion of on-site generation work at the construction site where the construction soil was generated, and if there is a receiving site that can receive the construction soil whose soil quality has been improved, selects inter-construction processing via a soil improvement plant in which the construction soil is transported to a soil improvement plant to be improved, and the construction soil is transported to the receiving site after the start of on-site receiving work. A construction soil management system characterized by:

6. The construction generated soil management system according to claim 2, When there is no receiving site to receive the construction generated soil, the processing method determination unit selects a designated processing method of transporting the construction generated soil to the stockyard or the soil improvement plant. A construction soil management system characterized by:

7. The construction generated soil management system according to claim 1, The decision policy further defines a priority based on the volume of earth used and a priority based on the cost. A construction soil management system characterized by:

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